Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
Raster

1:100,000 Digital Raster Graphics for Delaware

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

2.
Raster

1:100,000 Digital Raster Graphics for Maryland

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

3.
Raster

1:100,000 Digital Raster Graphics for Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

4.
Raster

1:100,000 Digital Raster Graphics for West Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

5.
1:100k Digital Raster Graphic - Collars Removed: Minnesota

1:100k Digital Raster Graphic - Collars Removed: Minnesota

2015. Minnesota Department of Natural Resources (DNR). A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

6.
Raster

1:24,000 - 7.5 minute digital elevation models (DEM) for the District of Columbia (30 meter)

2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

7.
Raster

1:24,000 - 7.5 minute digital elevation models (DEM) for Virginia (30 meter)

2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

8.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for Maryland

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

9.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for New Jersey

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

10.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for the District of Columbia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

11.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for West Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

12.
Raster

1:24,000 -7.5 minute digital elevation models (DEM) for West Virginia (30 meter)

2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

13.
1:24k Digital Raster Graphic - Collars Removed: Minnesota

1:24k Digital Raster Graphic - Collars Removed: Minnesota

2015. Minnesota Department of Natural Resources (DNR). A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

14.
Raster

1:250,000 Digital Raster Graphics for Delaware

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

15.
Raster

1:250,000 Digital Raster Graphics for Maryland

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

16.
Raster

1:250,000 Digital Raster Graphics for Virginia

2000. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

17.
Raster

1:250,000 Digital Raster Graphics for West Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

18.
1:250k Digital Raster Graphic - Collars Removed: Minnesota

1:250k Digital Raster Graphic - Collars Removed: Minnesota

2015. Minnesota Department of Natural Resources (DNR). A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

19.
Image

Above-Ground Biomass, 30 Meter Resoulution, Statewide: Maryland, 2011

2011. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.Maryland aboveground biomass map [30m] generated using Random F...

20.
Image

Aerial Imagery, 1 Meter Resolution, Statewide, National Agriculture Imagery Program: Maryland, 2017

2017. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.The National Agriculture Imagery Program (NAIP) acquires aerial...

21.
Image

Aerial Imagery, 3 Inch Resolution: Baltimore, Annapolis, Gaithersburg, Maryland, 2014, 2016

2014, 2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.This image service provides Three Inch resolution aerial imager...

22.
Image

Aerial Imagery, 6 Inch Resolution, Statewide: Maryland, 2014, 2016

2014, 2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.This image service provides Six Inch resolution aerial imagery ...

23.
Vector Created with Sketch.

Aerial Imagery (Doq) Grid: Michigan, 1992-1998

1992-1998. State of Michigan. Digital Ortho-Quadrangle grid for 1992 1998 aerial imagery acquisitions.

24.
Image

Aerial Imagery: DuPage County, Illinois, 1956

1956. DuPage County Illinois. Aerial Imagery of DuPage County: 1956 (For reference only not to any scale).

25.
Image

Aerial Imagery: DuPage County, Illinois, 1978

1978. DuPage County Illinois. Aerial Imagery of DuPage County: 1978.

26.
Image

Aerial Imagery: DuPage County, Illinois, 1998

1998. DuPage County Illinois. DuPage County Black and White Ortho Imagery: 1998.

27.
Image

Aerial Imagery: DuPage County, Illinois, 2002

2002. DuPage County Illinois. DuPage County region ortho Imagery: 2002/03.

28.
Image

Aerial Imagery: DuPage County, Illinois, 2010

2010. DuPage County Illinois. Aerial Imagery of DuPage County: 2010.

29.
Image

Aerial Imagery: DuPage County, Illinois, 2013

2013. DuPage County Illinois. Aerial Imagery of DuPage County: 2013.

30.
Image

Aerial Imagery: DuPage County, Illinois, 2014

2014. DuPage County Illinois. Aerial Imagery of DuPage County: 2014.

31.
Image

Aerial Imagery: DuPage County, Illinois, 2016-2017

2016-2017. DuPage County Illinois. Aerial Imagery of DuPage County: 2016-2017 Imagery Service. Note: This imagery is used in the DuPage County Parcel Viewer.

32.
Vector Created with Sketch.

Aerial Imagery Index Grid, 12-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

33.
Vector Created with Sketch.

Aerial Imagery Index Grid, 1-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

34.
Vector Created with Sketch.

Aerial Imagery Index Grid, 3-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

35.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1965

1965. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

36.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1968

1968. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

37.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1972

1972. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

38.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 2014

2014. The Maryland-National Capital Park & Planning Commission. The Commission purchased imagery for Spring 2014 from Kucera International, Inc. for all of Prince George's County, Maryland. This GIS point layer...

39.
Aerial Imagery: Sherburne County, Minnesota, 2014

Aerial Imagery: Sherburne County, Minnesota, 2014

2014. Sherburne County GIS. Aerial imagery obtained in the spring of 2014.

40.
Aerial Imagery: Sherburne County, Minnesota, 2015

Aerial Imagery: Sherburne County, Minnesota, 2015

2015. Sherburne County GIS. Digital Color orthophotography covering Sherburne County, Minnesota.

41.
Image

Aerial Imagery, Spring: DuPage County, Illinois, 2011

2011. DuPage County Illinois. Aerial Imagery of DuPage County: 2011.

42.
Image

Aerial Imagery, Spring: DuPage County, Illinois, 2012

2012. DuPage County Illinois. Aerial Imagery of DuPage County: 2012.

43.
Vector Created with Sketch.

Aerial Photo Centers, Maryland Imagery Acquisition Flight Information: Maryland

2018. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.This service contains photo centers for the 2016 2017 high-reso...

44.
Image

Aerial Photo Color 2003-2006 (cached mapservice): Pennsylvania

2010. PAMAP Program Cycle 1/DVRPC 2005 Digital Orthoimagery High Resolution Orthoimage (2003 - 2006) - cached mapservice.

45.
Aerial Photo Counties: Iowa, 2016

Aerial Photo Counties: Iowa, 2016

2016. These county-wide datasets have been up-sampled to a one-meter-resolution raster, in jp2 format.

46.
Vector Created with Sketch.

Aerial Photo Grid: Dublin, Ohio

2015. Ohio Geographically Referenced Information Program. Political and Administrative Boundaries around Dublin, Ohio. This includes the layers: Tax Increment Finance Zones, Annexation History, Subdivision...

47.
Vector Created with Sketch.

Aerial Photo Grid: Dublin, Ohio, 2009

2009. Ohio Geographically Referenced Information Program. Political and Administrative Boundaries around Dublin, Ohio. This includes the layers: Tax Increment Finance Zones, Annexation History, Subdivision...

48.
Vector Created with Sketch.

Aerial Photo Tile Grid, 3 Inch, Maryland Imagery Acquisition Flight Information: Baltimore, Annapolis, Gaithersburg, Maryland

2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.This data contains the tile layout for imagery acquistion...

49.
Vector Created with Sketch.

Aerial Photo Tile Grid, 6 Inch, Maryland Imagery Acquisition Flight Information: Maryland

2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.This data contains the tile layout for imagery acquistion...

50.
Image

Aerial Photography - 1927 - 2016, Dakota County: Minnesota

1927-2016. Partial and County wide ortho photography at various pixel resolutions from a variety of years from 1927 - 2016. <a href="Summary.htm">Horizontal A...